Fill PDF Forms
Fill in interactive PDF form fields and optionally flatten them — all in your browser.
This tool runs entirely in your browser. Your files are never uploaded.
In short
Fill PDF Forms lets you fill in and flatten interactive PDF form fields. Everything runs 100% in your browser via WebAssembly — your file is never uploaded and never leaves your device. FeelPDF is free with no file-size limits, no daily limits, no sign-up, no ads and no trackers — and it is open-source under AGPL-3.0.
How to fill pdf forms
- 1
Open the Fill PDF Forms tool
Go to the Fill PDF Forms page on FeelPDF — no account or install needed.
- 2
Add your file
Drop your file — it stays on your device, nothing is uploaded.
- 3
Adjust the options
Set any options to fill in and flatten interactive PDF form fields.
- 4
Download the result
Click the button and your new file is saved directly to your device.
Frequently asked questions
- Are my files uploaded to Fill PDF Forms?
- No. Fill PDF Forms runs entirely in your browser using WebAssembly. Your files are never uploaded — you can verify this in your browser's network tab.
- Is it really free?
- Yes. FeelPDF is free with no file-size caps, no daily limits, no account and no ads. It is open-source under the AGPL-3.0 licence.
- Do I need to install anything or sign up?
- No. It works instantly in any modern browser — no download, no registration, no cookie banner.
- Is FeelPDF GDPR compliant?
- Yes, by design. For in-browser tools we never receive your files at all; the one server-assisted path runs in the EU with zero data retention.